This Polk Audio Subwoofer has a buzzing sound when no audio is inputted. Also if you turn the volume knob the sound seems to fade in and out. The issue was 2 bad capacitor's of 47uf 50volts.
Some important tools for the job:
-Audio signal tracer ( • Audio signal tracer )
-Soldering iron
-47uf 50V caps.
#AudioRepair
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27 авг 2024